Engineering topics
Held, T.
Publications and source records attributed to Held, T..
Measurement of cross section for e + e − → Ξ − Ξ ¯ + near threshold at BESIII
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Measurement of cross sections for e + e − → μ + μ − at center-of-mass energies from 3.80 to 4.60 GeV
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Observation of a Resonant Structure in e + e − → K + K − π 0 π 0
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Search for the rare decay η ′ → π 0 π 0 π 0 π 0 at BESIII
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Amplitude analysis of D + → K S 0 π + π + π -
The decay D + → K S 0 π + π + π - is studied with an amplitude analysis using a data set of 2.93 fb - 1 of e + e - collisions at the ψ ( 3770 ) peak accumulated by the BESIII detector. Intermediate states and nonresonant components, and their relative fractions and phases, have been determined. The significant amplitudes, which contribute to the model that best fits the data, are composed of five quasitwo-body decays K S 0 a 1 ( 1260 ) + , K ¯ 1 ( 1270 ) 0 π + K ¯ 1 ( 1400 ) 0 π + , K ¯ 1 ( 1650 ) 0 π + , and K ¯ ( 1460 ) 0 π + , a three-body decay K S 0 π + ρ 0 , as well as a nonresonant component K S 0 π + π + π - . The dominant amplitude is K S 0 a 1 ( 1260 ) + , with a fit fraction of ( 40.3 ± 2.1 ± 2.9 ) % , where the first and second uncertainties are statistical and systematic, respectively.
Observation of η c → ω ω in J / ψ → γ ω ω
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Amplitude Analysis of D s + → π + π 0 η and First Observation of the W -Annihilation Dominant Decays D s + → a 0 ( 980 ) + π 0 and D s + → a 0 ( 980 ) 0 π +
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Measurements of the branching fractions of η c → K + K − π 0 , K S 0 K ± π ∓ , 2 ( π + π − π 0 ) , and p p ¯
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Search for heavy Majorana neutrino in lepton number violating decays of D → K π e + e +
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Observation and study of the decay J / ψ → φ η η '
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Amplitude analysis and branching fraction measurement of D 0 → K − π + π 0 π 0
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Observation of the Decay X ( 3872 ) → π 0 χ c 1 ( 1 P )
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Search for baryon and lepton number violation in J / ψ → Λ c + e − + c . c .
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Precision measurements of the e + e − → K S 0 K ± π ∓ Born cross sections at center-of-mass energies between 3.8 and 4.6 GeV
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Precision Measurement of the Branching Fractions of η ′ Decays
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